Sink



FIG. 1 is a bottom left side elevational view of the sink showing thenew design;

FIG. 2 is a top right side elevational view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a back view thereof; and,

FIG. 8 is a bottom view thereof.

The ornamental design for a sink, as shown and described.